I own modded D7000 which where my favorite can for years. Just bought a re-cabled 8 wire TWag/TWcu PS500 and I am blown away by how good these are. I was not expecting this kind of depth, clarity and tonality. I dare to say these are the better headphone.

I listen to them both balanced out of audiogd flagship system so they are fed well. Grados will typically sound great out of even a portable source.

seem quite hard to get in the United Kingdom. A few places showing out of stock.

I read a few threads on Headfi discussing the TH900, seems logical they would be better than the Denon D7000, as Fostex designed both and the TH900 uses the newly developed drivers with 1.5 tesla magnetic flux density.

havent heard them yet, its on my 'to hear list'. I really like the Denon D7000, a very fun, yet coloured headphone. needs a good amp to focus the heavy bass.

do you not feel the ps1000 is a little treble hot? ive been bedding mine in for 400 hours and I still am not happy with it. It has improved a lot though since I first used it - seems to need a lot of time to really settle. Only Grado ive owned that seems to need this long.

I bought my pair used and they are not treble hot to my ear- but I have heard two other pairs that have thin sounding treble. It led me to believe that Grado have quality control issue with this model. My pair also have slightly boomy bass whereas a lot of PS1000 are raving about their bass. Basically, I am not sure...